July 1, 2013

U-M Kellogg Eye Center is one of 12 US centers to offer the first FDA-approved retinal implant

Argus II bionic eye has potential to provide partial sight for people with retinitis pigmentosa

Ann Arbor, MI  – The University of Michigan Kellogg Eye Center is one of 12 major centers across the country soon to offer a retinal implant that could  provide partial sight for individuals with late-stage retinitis pigmentosa (RP).  Sometimes referred to as an artificial retina or “bionic eye,” the Argus® II Retinal Prosthesis System (“Argus II”) was developed by Second Sight Medical Products, Inc. and was approved by the Food and Drug Administration (FDA) in February of this year.

RP is an inherited retinal degenerative disease that causes slow but progressive vision loss due to a gradual loss of the light-sensitive retinal cells called rods and cones.  Patients with RP experience gradual loss of side vision and night vision, and later of central vision, which can result in near blindness.

In the Argus II System, retina prosthesis is surgically implanted in one eye. The individual wears glasses equipped with a camera that captures images and converts them into a series of small electrical pulses. The pulses are transmitted wirelessly to the prosthesis and its array of electrodes on the surface of the retina. These pulses are intended to stimulate the retina’s remaining cells, resulting in the corresponding perception of patterns of light in the brain. The patient then learns to interpret these visual patterns, thereby regaining some visual function.

Retinal prosthesis implant
The retinal prosthesis, Argus II.
Glasses, a video processing unit (VPU) and a cable are part of the Argus II System
The Argus II System includes glasses, a video processing unit (VPU) & a cable.

Video and photos compliments of Second Sight Medical Products

“Until now, we’ve had no treatment options to offer our patients with advanced RP,” says Kellogg’s Thiran Jayasundera, M.D., retina surgeon and principal investigator.  “The implant will bring light back into our patients’ worlds, allowing them to detect shapes of people and objects in their environment.  They will gain more independence and the ability to go about their daily lives with more confidence.”

In a recent clinical study, most participants were able to perform basic activities better with the retina prosthesis than without it.  Many were able to locate lights and windows, follow lines in a crosswalk, or avoid running into things as they walked. Some could sort laundry or determine where other people were located in a room, and about half of the subjects were able to read very large letters (about 9 inches high).

Dr. Jayasundera and colleagues expect to begin performing the procedure in 4 to 6 months. Among the eligibility requirements, potential patients must be 25 years of age or older with end stage RP that has progressed to the point of having “bare light” or no light perception in both eyes.

To learn more about the device and eligibility requirements, contact:
Second Sight  www.2-sight.com
Domestic: 1 (855)-756-3703  International: +1 (818) 833-5027
patients@2-sight.com

Kellogg Eye Center Retinal Dystrophy Clinic
734 763-2280
retina-implant@umich.edu

Kellogg Retina Team:  Kari Branham, MS, CGC, Ashley Howson, MS, OTR/L, John Heckenlively, MD, Thiran Jayasundera, MD, Mark Johnson, MD, Naheed W. Khan, PhD, Donna M. Wicker, OD, David Zacks, MD, PhD

Media Contact:  Betsy Nisbet bsnisbet@umich.edu  734-647-5586  

Last Modified: Thursday, 23-Jan-2014 15:22:01 EST